This is an
unused battle situation report. The map depicts ground which is about
2.5 Km long by 1Km wide.

The battle
is the Messines Ridge attack on 7 June 1917. Why Bert had this sitrep
is unknown, his Division (23rd) was attacking further north as part
of X Corps.The area depicted, which includes the Spanbroekmolen mine
(SW corner of map), was an objective of 36th (Ulster) Division, part
of IX Corps. Both Corps were part of Plumer's 2nd Army so maybe there
was some mutual artilllery support. The cluster of buildings and road
network (NE corner) is Wytschaete. The area "N" appears to
be just over the road from the Wytshaete Military Cemetery. A magnified
version of the map is here
(600Kb).